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Microwave measurements on the heavy fermion superconductors UPt{sub 3} and UBe{sub 13}

Journal Article · · Journal of Low Temperature Physics
DOI:https://doi.org/10.1007/BF00753365· OSTI ID:183424
; ;  [1]
  1. Northwestern Univ., Evanston, IL (United States); and others
The complex microwave impedance at {approximately} 11.5 GHz was measured in the superconducting state of two well characterized heavy fermion single crystals, UPt{sub 3}and UBe{sub 13}. This microwave photon energy is about 30% and 20% of the zero-temperature energy gap, respectively, and is higher than previous measurements. The results for UBe{sub 13} seem to be well described by the Mattis-Bardeen theory in the dirty-limit for a conventional superconductor. However, the behavior in UPt{sub 3} deviates from this conventional theory even when paramagnetic impurity scattering effects are taken into account.
Sponsoring Organization:
USDOE
OSTI ID:
183424
Report Number(s):
CONF-950676--; CNN: Grant DMR 91-20521; Grant DMR93-09061
Journal Information:
Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 101; ISSN JLTPAC; ISSN 0022-2291
Country of Publication:
United States
Language:
English